Transportation
| Thu 13 Aug 2026
Beijing, Aug. 13 -- China Railway Erju 1st Engineering has obtained a patent for tunnel ditch cable trough drainage pipe fixing device. This invention was developed by Fan Shouyun, Lai Jiacheng, Yang Pingle, Wang Jiaqi, Xu Liangfeng, Wan Fei, Yang Biao, Zhang Zhengqiang, Sun Yanyong, Chen Zhenghui and Hu Yongjie.
The patent app..